KHERAJ WARBLING RELAY can be fitted with Siren to produce automatically warbling note (howling tones) for 4 secs. ON and 4 secs. OFF.
Specifications
Warbling Relay (Switch) for battery operated, single phase and three phase sirens (Howling tones for Sirens)
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In the early 1960’s, the Indian Government was in desperate need for Air Raid Signalling Products which were mainly imported from the UK. Mr. G. H. Kheraj saw this as a niche market and established the manufacturing capacity for these products. It was initially like a cottage industry with a capacity of a few sirens per week. 
Subsequently Mr. N. G. Kheraj (second generation) expanded the establishment and took the products to factories, banks, ships, oil refineries and workshops to name a few. In the late 1990’s, Mr. S. N. Kheraj optimised his engineering and management post graduate degree and took Kheraj to other corporates globally.
Nature of Business Manufacturer / Exporter / Supplier / Retailer
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